Hi, I have the same problem as reported by many in the previous threads on the subject although it's not so much a flash, but more of a flicker. Parts of the screen are fine while others kinda look "corrupt", maybe go green or pink for just a few milliseconds. I'm on 4K and screen flickers in many of the times when there are big "changes" in whatever's displayed. Fast scrolling through text, opening the Start menu, switching tabs in the browser and setting Youtube to full screen - these are just some of the times when the problem is prominent.

I have had this NUC for 9 months and this has never happened before. It only started this week, and I've made no recent changes to the system, nor installed anything.

I updated my BIOS and graphics driver to the latest versions, but to no avail. The problem persists. I even tried a different HDMI cable.

If the flickering still persists - and please tell us here if this is the case - then you should download and reinstall the version if the driver that you were running previously. Links to older versions are listed on the download page linked above.

I do run the latest BIOS, and I did download the latest graphics driver. However, it wasn't from the link you provided. Now after I did use your link, I think the flickering stopped. I'll update here if the problem reoccurs.